JP3101069U - Main assembly of optical transceiver module - Google Patents

Abstract

Provided is a main body assembly of an optical transceiver module, which can eliminate a possibility of misalignment between a sleeve and a coupling and improve performance.
A body assembly of an optical transceiver module, comprising: a sleeve comprising a bore; holes passing through upper, lower, and upper and lower portions; and a coupling comprising a tube bundle of optical fibers inserted into the holes. , And the sleeve and the coupling are joined after being aimed by an alignment device.
[Selection diagram] FIG.

Description

The present invention relates to an optical connector, and more particularly, to an improved body assembly of a light receiving / transmission module.

Laser diodes (1aser diodes) are used as light sources in current optical communication systems. FIG. 1 is a cross-sectional view of a known optical transceiver module. The laser diode is sealed to form a laser diode element B. The laser diode element B has a head fixed to a hollow portion below the cylindrical base C. Thus, the light emitting portion A is formed. The body assembly D is installed on the base C. The body assembly D includes a hollow part (ho11ow), a cylindrical member E, a ring F disposed coaxially below the cylindrical member E, a hollow cylinder G disposed coaxially with the cylindrical member E and made of a ceramic material, and , A cylindrical element H fitted into a cylinder G. Also, the lower part of the cylindrical element H is polished to form a slope I to prevent the reflected light from being directly irradiated on the laser diode B. Otherwise, laser diode B is disturbed by noise. The plastic tube bundle of plastic optical fiber I is arranged along the long axis of the cylindrical element H. Therefore, the light emitted from the laser diode B is concentrated on the core of the tube bundle of the optical fiber I. The light collection then goes to the core of the optical fiber tube bundle of the optical connector (not shown). The base C, the cylindrical member E, the ring F, the ceramic cylinder G, and the cylindrical element H are firmly fixed to each other by rivets. Further, the light emitting assembly is formed by enclosing the light emitting section A and the main assembly D.

Similarly, when the laser diode element B is introduced as a detection element, the light receiving assembly is formed by enclosing the light emitting section A and the main body assembly D. The optical transceiver module is connected to the optical connector by a plug. However, the known optical transceiver module has some disadvantages. For example, since there are many components, it is difficult to assemble and the manufacturing cost is high. Rivet setting accumulates the tolerances of each element and affects the quality of light emission. Large volume, light, thin, short, small size does not match the trend. The processing accuracy of the ceramic cylinder G is easy to control, and even if the optical connector is repeatedly inserted and removed, an error does not occur due to frictional wear. However, since the equipment is expensive and the manufacturing process is complicated, the manufacturing cost is high.

In order to solve the above problems, the present invention provides a main body assembly of an optical transceiver module.

The present invention provides a body assembly of an optical transceiver module, a sleeve comprising a bore, a hole passing through the upper, lower, and upper and lower portions, a coupling comprising a tube bundle of optical fibers inserted into the hole, And the sleeve and the coupling are joined after being aimed by an alignment device.

The present invention reduces the possibility of misalignment when coupling optical connectors and optical fiber bundles, minimizes light transmission losses, improves performance, reduces the number of elements, facilitates assembly, and reduces manufacturing costs. Cost is reduced and high precision, high tightness and wide application range are achieved.

2 and 3 show the main assembly 10 of the optical transceiver module according to the present invention. The main body assembly 10 includes a sleeve 11 and a coupling 12. The coupling 12 is aimed at the sleeve 11 by an alignment device before being coupled.

Referring to FIG. 4, the sleeve 11 is provided with a bore 111 and accommodates an optical connector (not shown) used for optical transmission. Referring to FIG. 5, the coupling 12 includes an upper portion 121, a lower portion 122, and a hole 123 penetrating the upper and lower portions. The tube bundle of the optical fiber 124 is fitted into the hole 123. The protrusion 125 is formed on the upper part 121. The protrusion 125 is housed in the bore 111 and comes into contact with the lower part of the optical connector inserted in the bore 111. The convex portion 125 eliminates a gap generated when the upper portion 121 and the optical connector are connected. The lower part 122 consists of a cylindrical element 126 with a slope 127, which prevents reflected light from being directed onto the laser diode. Otherwise, the laser diode will be disturbed by noise.

Referring to FIG. 6, an alignment device is shown. The alignment device comprises a light source 20 and a light receiver 21 below the coupling 12. Optical connector 22 is coupled to light source 20 and inserted into bore 111. Light from the light source 20 is directed to the optical connector 22 as indicated by the arrow J. The coupling between the sleeve 11 and the coupling 12 is achieved by aiming the light J at a tube bundle of optical fibers 124 sensed by the light receiver 21. After aiming, the sleeve 11 and the coupling 12 are integrated. Therefore, performance is improved.

The main body assembly 10 is coupled to the optical transceiver to form an optical transceiver module. The optical transceiver module is stamped into a plastic mold. Since the optical transceiver module has an optical connector that can be inserted into the bore 111, the light from the light source 20 concentrates on the core of the tube bundle of the optical fibers 124 of the coupling 12. The light collection is directed to the core of the tube bundle of optical fibers of the optical connector.

The sleeve 11 and the coupling 12 are aimed before the connection. Therefore, the possibility of misalignment between the bundle of optical fibers of the optical connector and the bundle of optical fibers 124 of the coupling 12 is minimized. In addition, light transmission losses are reduced and performance is improved. Further, the body assembly 10 of the present invention has a reduced number of elements, is easier to assemble, has lower manufacturing costs, and achieves high precision, high tightness, and a wide range of applications.

Although the preferred embodiments have been disclosed in the present invention as described above, they are not limited to the present invention in any way, and any person who is familiar with the technology can make various modifications within the spirit and scope of the present invention. Variations and hydration can be added, and therefore the protection scope of the present invention is based on the contents specified in the claims of the utility model.

It is sectional drawing of a well-known optical transmission / reception module. FIG. 4 is a sectional view of the optical transceiver module according to the present invention. FIG. 3 is a partial three-dimensional view of the optical transceiver module shown in FIG. 2. FIG. 3 is a sectional view of the sleeve shown in FIG. 2. FIG. 3 is a sectional view of the coupling shown in FIG. 2. FIG. 3 is a sectional view of the optical transceiver module shown in FIG. 2.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 10 ... Body assembly 11 ... Sleeve 12 ... Coupling 20 ... Light source 21 ... Light receiver 22 ... Optical connector 111 ... Bore 121 ... Upper 122 ... Lower 123 ... Hole 124 ... Optical fiber 125 ... Convex part 126 ... Cylindrical element 127 ... Slope

Claims (3)

A body assembly of an optical transceiver module,
A sleeve made of bore,
Upper, lower, and a hole penetrating the upper and lower portions, a coupling consisting of a bundle of optical fibers fitted into the hole,
The body assembly of claim 1, wherein the sleeve and the coupling are coupled after being aligned by an alignment device. The body assembly according to claim 1, wherein the upper portion of the coupling comprises a protrusion housed by the bore. The body assembly according to claim 1, wherein the lower portion of the coupling includes a slope.

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